Oil burner



W. H. SCHROFF AND R. A GOUDIE.

OIL BURNER.

APPLICATION FILED JAN. 30. I920.

Patented Jan. 17,1922.

2 SHEETS-SHEET INVENTOR M H. Schraff' 5-. A Goudzge I MIMI Q ATTORNEYS W. H. SCHROFF AND R. A. GOUDiE.

OIL BURNER. I APPLICATION mm m. 30. 1920.

1,403,573, Patented Jan. 17, 1922.

2 SHEETS-SHEET 2.

Ill]! llllll mllll 1/1IIIIIIII INVENTOR Sch ref! W. H. RA. Goudz'e A TTORNEYS UNITED sures latent QFHQE.

WILLIAM HENRY scnnorr ennnorrenvn ARTHUR scams, or onrcneo, ILLINOIS:

OIL BURNER.

Specification. of Letters Eatent.

Patented Jan. 17, 1922.

Application filed Eanuary 30, 20. Serial No. 355,220.

1 '0 all whom it may concern:

Be it known that we, WILLIAM H. Sounorr and Rotmmn A. Goonm, citizens of the United States, and residents of Chicago, in the county of Cook and State of Illinois, have invented a new and useful Inn proveinent in Oil Burners, of which the following is a full, clear, and exact description.

Our invention relates to improvements in oil burners, and it consists in the combinations, constructions, and arrangements herein described and'claimed. V

An object of our'invention is to provide a'novel oil burner having a de i i cry tube adjustable toward and away from the discharge end of a nozzle in order to secure the proper mixture of fuel and air.

A further object of our invention is to provide a battery of oil burners in which means are provided to shut ofi the individ: ual burners at will.

A further object of our invention is t provide a battery of oil burners in which means is provided for simultaneously adjust fuel delivery tubes with respect to the discharge end'sof the nozzles of the several oil burners composing the batter Other objects and advantages will appear in the following specification, and the novel features of the invention will be particularly pointed out in the appended claims.

Cur invention is illustrated in the accompanying drawings, forming'part of this application, in which- Fig. l is an enlarged sectional view of a battery of oil burners on the line 11 of Fig. a,

Fig. 2 Fig. 1,

Fig. 3 is a sectional view of a portion of the device along the line 33 of Fig. 1,

Fig. 4 is a front view of a furnace to which the device has been applied,

Fig. 5 is a side view partly in section of a furnace to which the device has been ap plied.

In carrying out our invention, we provide a substantially cylindrical easing 1 having a tubular nozzle 2, a lateral tubular extension 3 which serves as an air inlet and a diametrically opposed lateral tubular extension 4. The end of the lateral inlet extension 3 is slightly tapered exteriorly and is threaded, as indicated at 5. The end of the lateral extension-l has a bell-shaped annular flange 6 threaded at 7 to engage the threads is a section along the line 22 of 5 noon the inlet extension 3 of an adjacent oil burner, whereby a number of burners may be connectedtogether to form abattery.

A circular damper 8 havingsubstantially the same diameter as theinner diameter of the inlet extension 3 ispivotally mounted in the latter. A damperregulat-or 9, secured to the damper 8, extends through the wall of the inlet extension 3 and provides a means for adjusting the" damper 8 to regulate the flow of air through the inlet extension The end of the cylindrical casing l opposite the nozzle 2 is threaded internally as indicated at 10. A circular plug 11 having an integral nut portion 12 is screwed within thethreaded end 10. An opening 13 extends through the center of the circular plug 11 and the integral nut portion 12 and is adapted to receive a fuel delivery tube 14: and an auxiliary air tube 15 which extend through the cylindrical casing linto the nozzle 2 and which may be slidablymoved toward or away from the end of the nozzle 2. A set screw 21 is provided to hold the fuel delivery tube 14: and the auxiliary air tube 15 in a position desired with respect to the end of the nozzle 2. The fuel delivery tube 14 is adapted to be connected to an oil supply pipe 16 in the manner shown in the accompanying drawings. A conical valve 17 (see Fig. 2) is disposed within the end of the fuel delivery pipe which is inserted within the nozzle 2. The valve 17 seats against the valve at the end of the fuel delivery tube 14 and is regulated by the valve stem 18 which extends the length of the fuel delivery tube "i l through the plug 19 to the handle 20.'

It will be noted that the valve stem 18 may be moved longitudinally in the fuel delivery tube lby turning the handle 20, thus opening and closing the valve 17 at will. The end of the auxiliary air tube 15 extending within the nozzle 2 is open, while the end outside the casing 1 is controlled by a valve 22 and may be opened or closed will.

From the foregoing description of the various parts of the device, the operation thereof may be readily understood. The oil burners are connected together in'the manner described to form batteries which may comprise any desired number of burners.

,An end burner in the battery is connected to an air pipe 23 while apipe plug 24 is screwed within the lateral extension at of iii the last burner in the battery (see Fig. 1).

The nozzles 3 of the burner project with in a furnace. In Figures t and 5 of the accompanying drawing, we have shown a battery of burners embodying my invention connected to a down draftv steam boiler furnace 25. It is customary in furnaces of this type to provide a lire wall 26 of re'lt actory material within the furnace against which the flame from the nozzle of the burner impinges.

In actual practice, a slight movement of the fuel. valve of the burner toward or away from the end of the nozzle makes a very appreciable dillerence in the grade of the com' bustion secured. If the valve is too near the end of the nozzle, fluid fuel will be projected within the furnace against the fire wall and if the valve is too far back within thenozzle, the proportion of air is too great for satisfzwtory combustion of the mixture. In either event, the etlicicncy oi the burner is greatly lessened and it is therefore of the utmostimportance to provide a proper mixture of fuel and air.

To accomplish this object in an oil burner embodying our invention as described, the oil delivery tube 14: is slidable with respect to the end of the nozzle2 and may be adj usted at will. Furthermore, we provide the auxiliary air tube 15 which may be opened or closed at will. The fuel passes from the fuel supply pipe 16 into the fuel delivery tube The-valve 17 is opened and since the same is conical in shape the fuel will be projected in a conical. spray into the end of the nozzle 2 where it is thoroughly mixed with" air before entering the furnace where combustion takes place The flow of air through the inlet extension 3 is regulated. by means of the damper. The inrush of air through the inlet extension 3 entrains air through the auxiliary air tube 15 when the valve 22 i open. Consequently, the amount of air in the nozzle 2 for combiningwith the fuel may be regulated with the exactness necessary to insure a proper mixture. It will also be noted that the position of the fuel delivery tubes with respect to the ends of the nozzles may be regulated simultaneously in all burners in a battery by moving the oil supply pipe to which all are connected. Any desired number of. burners in a battery may be operated and the air and fuel supplies shut off from the remainder of the burners in the manner described.

We claim:

1. A battery of liquid fuel burners of the class described, each oil burner comprising;

a casing having an integralnozzle adapted to be placed within a furnace, an air inlet,

said inlet being threaded exteriorly at its,

end, an air outlet diametrically opposed to the air inlet, said outlet having an annular internally threaded bell-shaped flange opening. within the nozzle, a conical valve disposed within the fuel; delivery tube to regulate the flow, therethrough, an auxiliary air tube slidably disposed, within the casing and extending into the nozzle, and a common fuel supply pipe to which each fuel delivery tube is connected exteriorly of the casing, a compressed air pipe to which the inlet of the first positioned burner in the battery is connected, and a closure for the outlet of the last positioned burner in the battery. r s v 2. An oil burner comprising a plurality of tubes, each having a closed end, an air inlet to each of said. tubes, a fuel pipe slidably disposed in each tube and having one of its end projecting beyond the closed end of said tube, and a second pipe connected to the projecting ends of said fuel pipes, whereby a movement of said second named fuel pipe will simultaneously move said first named fuel pipes within aid tubes.

3. An oil burner comprising a plurality of tubes, each having a closed end, an air inlet to each of said tubes, an auxiliary air pipe slidably disposed in said tubes, a fuel pipe slidably disposed in each tube and having one of its ends projecting beyond the closed end of said tube, and a second pipe connected to the projecting ends of said fuel pipes, whereby a movement of said second named fuel. pipe will simultaneously move said first named fuel pipes relative to said auxiliary apipes and said tubes.

1. An. oil burner comprising a tube having closed end, an air inlet for said tube and an auxiliary air pipe slidably disposed in said tube and having an end projecting beyond the closed end of aid tube, the projecting end being fashioned into a handle, said pipe having an opening adjacent the handle whereby air can pass through the opening and into said pipe when the pipe is in its extended or open position.

5. An oil burner comprising a tube having a closed end, an air inlet for said tube, an auxiliary air pipe lidably disposed in said tube and having an end projecting beyond the closed end of said tube, the projecting end being fashioned into a handle, said pipe having an opening adjacent the handle whereby air can pass through the opening and into said pipe when the pipe is in its extended or open position, and means for locking said tube inclosed or open posit1on.

lVILIAliI HENRY SCHROFF. ROMAINE ARTHUR GOUDIE. 

